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mcs48: small bugfix for DA A

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This commit is contained in:
hap 2021-01-08 21:05:28 +01:00
parent a887f597bf
commit 0ed38692ed
1 changed files with 4 additions and 3 deletions
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7
src/devices/cpu/mcs48/mcs48.cpp
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@ -367,6 +367,7 @@ std::unique_ptr<util::disasm_interface> mcs48_cpu_device::create_disassembler()
return std::make_unique<mcs48_disassembler>((m_feature_mask & UPI41_FEATURE) != 0, (m_feature_mask & I802X_FEATURE) != 0);
}
/***************************************************************************
INLINE FUNCTIONS
***************************************************************************/
@ -520,7 +521,7 @@ void mcs48_cpu_device::execute_jcc(bool result)
{
uint16_t pch = m_pc & 0xf00;
uint8_t offset = argument_fetch();
if (result != 0)
if (result)
m_pc = pch | offset;
}
@ -656,9 +657,9 @@ OPHANDLER( da_a )
if ((m_a & 0x0f) > 0x09 || (m_psw & A_FLAG))
{
m_a += 0x06;
if ((m_a & 0xf0) == 0x00)
if (m_a > 0xf9)
m_psw |= C_FLAG;
m_a += 0x06;
}
if ((m_a & 0xf0) > 0x90 || (m_psw & C_FLAG))
{